<template>
	<view>
		<view class="search-box">
		  <!-- 使用 uni-ui 提供的搜索组件 -->
		  <uni-search-bar @input="input"  :radius="100" cancelButton="none"></uni-search-bar>
		</view>
    <!-- 搜索建议列表 -->
    <view class="sugg-list" v-if="searchList.length">
      <view class="sugg-item" v-for="(item, i) in searchList" :key="i" @click="gotoDetail(item)">
        <view class="goods-name">{{item.goods_name}}</view>
        <uni-icons type="arrowright" size="16"></uni-icons>
      </view>
    </view>
    <!-- 搜索历史 -->
    <view class="history-box" v-else>
      <!-- 标题区域 -->
      <view class="history-title">
        <text>搜索历史</text>
        <uni-icons type="trash" size="17"  @click="clearHistoryList"></uni-icons>
      </view>
      <!-- 列表区域 -->
      <view class="history-list">
        <uni-tag :text="item" v-for="(item, i) in historyList" :key="i" @click="skipDetail(item)"></uni-tag>
      </view>
    </view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				searchValue:'',
        timeID:null,
        searchList:[],
        historyList: uni.getStorageSync('historyList') ? JSON.parse(uni.getStorageSync('historyList')) : []
			};
		},
    methods: {
       input(e) {
          // e.value 是最新的搜索内容
         
          clearTimeout(this.timeID)
          this.timeID= setTimeout(()=>{
             console.log(e.value)
             this.searchValue = e.value
             this.getSearchList()
          },800)
        },
        async getSearchList() {
           if(this.searchValue==='') {
             this.searchList = []
             return
           }
          const {data:res} = await uni.$http.get('/api/public/v1/goods/qsearch',{query:this.searchValue})
            if(res.meta.status !== 200) return uni.$showToast()
            this.searchList = res.message
            this.saveSearchHistory()
        },
        gotoDetail(val) {
          uni.navigateTo({
            url:'/subpkg/goods_details/goods_details?goods_id='+val.goods_id
          })
        },
         saveSearchHistory() {
            // 1. 将 Array 数组转化为 Set 对象
             const set = new Set(this.historyList)
             // 2. 调用 Set 对象的 delete 方法，移除对应的元素
             set.delete(this.searchValue)
             // 3. 调用 Set 对象的 add 方法，向 Set 中添加元素
             set.add(this.searchValue)
             // 4. 将 Set 对象转化为 Array 数组
             this.historyList = Array.from(set)
             
             uni.setStorageSync('historyList',JSON.stringify(this.historyList))
          },
          clearHistoryList() {
            this.historyList = []
            uni.removeStorageSync('historyList')
          },
          skipDetail(val){
            console.log(val);
            uni.navigateTo({
              url:'/subpkg/goods_details/goods_details?query='+val
            })
          }
    },
	}
</script>

<style lang="scss">
.uni-searchbar {
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: row;
  position: relative;
  padding: 16rpx;
}
.search-box {
  position: sticky;
  top: 0;
  z-index: 999;
}
.sugg-list {
  padding: 0 5px;

  .sugg-item {
    font-size: 12px;
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
    display: flex;
    align-items: center;
    justify-content: space-between;

    .goods-name {
      // 文字不允许换行（单行文本）
      white-space: nowrap;
      // 溢出部分隐藏
      overflow: hidden;
      // 文本溢出后，使用 ... 代替
      text-overflow: ellipsis;
      margin-right: 3px;
    }
  }
}
 .history-box {
    padding: 0 5px;
  
    .history-title {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 40px;
      font-size: 13px;
      border-bottom: 1px solid #efefef;
    }
  
    .history-list {
      display: flex;
      flex-wrap: wrap;
  
      .uni-tag {
        margin-top: 5px;
        margin-right: 5px;
      }
    }
  }
</style>
